Nightmare



The Nightmare is a bio-weapon which serves Mundus. It is the boss of Mission 16: Nightmare of Darkness, Mission 18: Spirit Stone "Elixir", and Mission 20: Showdown with Nightmare in Devil May Cry.

Nightmare
The Nightmare was created by Mundus out of inorganic substances, and it is unknown whether it is even conscious. It is powered by several cores which it rarely exposes and which can absorb Devil Trigger power from Dante; if it is allowed to absorb enough, it can activate its own Devil Trigger. It also possesses a multitude of offensive mechanisms, and it will change its attack pattern each time one of its cores is destroyed. It generally exists in an invulnerable gel-like form which includes the remains of its victims, and in this form it can swallow enemies and teleport them to an evil dimension in which their trauma manifests as evil spirits. In order to be damaged, it must be forced into a more solid form by activating embossed discs on the ground, restraining tools used to keep it from overriding. However, in this form it will encase itself in a hard armor, and it will attack more viciously.

Dante first encounters the Nightmare within the castle cathedral, but he forces it to retreat. It later appears while Dante performs the ritual to transform the Philosopher's Egg into the Elixir, and is again forced to retreat. After Dante enters the Underworld, he is lured into the Nightmare's den by Trish, who is pretending to be injured. However, Nightmare attacks as soon as Dante enters the room, and while fighting it, Dante is also attacked by Trish. Dante manages to finally destroy the Nightmare, and coldly leaves Trish in the room while he goes on to Mundus.

Nightmare-β


The Nightmare-β is a gun modeled after Nightmare that was formed in the Underworld. Because it is a similar weapon to Nightmare, it is ineffective against the larger bio-weapon. It uses DT power to fire reflectable green lasers, and can be charged for more powerful shots. It is found within the second shield chamber outside of the Colosseum. If it is not obtained there, it can later be found on the bed inside the mirror world version of the castellan's bedroom. With little/no DT charged into it, it's very weak and almost useless, but if you're willing to charge at least 3 runes into it, it becomes extremely powerful, shooting several beams at once, doing a lot of damage to bosses even on DMD difficulty and rasing your attack combo to Absolute/Stylish rapidly.

Nightmare-γ
The Nightmare-γ is another gun modeled after Nightmare and formed in the demon world. It is used by Trish in Devil May Cry 2 for her underwater missions. It behaves similarly to the Nightmare-β, but does not consume DT runes and can ONLY be used underwater, like the needle gun.